But he probably was the first to let the world know about it.

VOA: special.2009.10.27

Milton's taking pains here, and he does this with very few other poems, to let us know precisely when it is that he's written it.

弥尔顿在这里极力想让我们，知道他确切的创作时间。

耶鲁公开课 - 弥尔顿课程节选

So it could be--From Hannibal's point of view he doesn't know which pass you're going to defend, but let's have a look at his payoffs.

站在汉尼拔的立场,他应该,不知道你会防守哪条路,但让我们看看他的收益

耶鲁公开课 - 博弈论课程节选

He says he believes it is necessary to let North Korea know having nuclear programs will prove to be a bigger disadvantage than not having them.

VOA: standard.2009.05.26

He said the United States will "take appropriate steps to let North Korea know that it can't threaten the safety and security of other countries with impunity."

VOA: standard.2009.04.03